/* ======================
   Apple风格导航栏CSS
   分类组织和优化
   ====================== */

/* --------------------
   1. 基础变量
   -------------------- */
:root {
  --nav-height: 50px;
  --apple-bg-color: rgba(255, 255, 255, 0.95);
  --apple-text-color: rgba(0, 0, 0, 0.8);
  --apple-accent-color: #0071e3;
  --apple-hover-accent: #0077ed;
  --apple-menu-bg: rgba(255, 255, 255, 0.95);
  --apple-text-secondary: #86868b;
  --apple-border-color: rgba(0, 0, 0, 0.1);
  --apple-blur-effect: saturate(180%) blur(20px);
  --apple-font: -apple-system, BlinkMacSystemFont, "San Francisco", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --apple-transition: all 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
}

/* --------------------
   2. 主导航栏结构
   -------------------- */
.navbar {
  background-color: var(--apple-bg-color);
  backdrop-filter: var(--apple-blur-effect);
  -webkit-backdrop-filter: var(--apple-blur-effect);
  position: sticky;
  top: 0;
  z-index: 9999;
  transition: transform 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
  padding: 0;
  margin: 0;
  font-family: var(--apple-font);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

/* 导航栏隐藏状态 */
.navbar-hidden {
  transform: translateY(-100%);
}

.nav-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  max-width: 1350px;
  margin: 0 auto;
  padding: 0 22px;
}

/* Logo */
.nav-logo {
  font-size: 22px;
  color: var(--apple-accent-color);
  text-decoration: none;
  opacity: 1;
  transition: var(--apple-transition);
  padding: 12px 20px;
  font-weight: 500;
}

.nav-logo:hover {
  opacity: 0.9;
  color: var(--apple-hover-accent);
}

/* 菜单项 */
.nav-menu {
  display: flex;
  justify-content: center;
  flex: 1;
  margin: 0 20px;
}

.nav-item {
  color: #000;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.01em;
  text-decoration: none;
  padding: 0 20px;
  opacity: 0.9;
  transition: var(--apple-transition);
  white-space: nowrap;
  position: relative;
  height: var(--nav-height);
  display: flex;
  align-items: center;
}

.nav-item:hover,
.nav-item.active {
  opacity: 1;
  color: var(--apple-accent-color);
  text-decoration: none;
}

/* 右侧操作区 */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 18px;
}

/* 搜索图标 */
.search-icon {
  color: var(--apple-text-color);
  font-size: 18px;
  opacity: 0.8;
  transition: var(--apple-transition);
  cursor: pointer;
  padding: 0 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.search-icon:hover {
  opacity: 1;
  color: #000;
}

/* --------------------
   3. 下拉菜单通用样式
   -------------------- */
.dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: var(--nav-height);
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background-color: var(--apple-menu-bg);
  backdrop-filter: var(--apple-blur-effect);
  -webkit-backdrop-filter: var(--apple-blur-effect);
  border-radius: 5px;
  min-width: 80px;
  width: 80px;
  opacity: 0;
  visibility: hidden;
  transition: var(--apple-transition);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  overflow: hidden;
  padding: 10px 0;
  border: 1px solid var(--apple-border-color);
  pointer-events: none;
}

.dropdown:hover .dropdown-menu {
  opacity: 1 !important;
  visibility: visible !important;
  transform: translateX(-50%) translateY(0) !important;
  pointer-events: auto !important;
  display: block !important;
}

.dropdown-item {
  display: block;
  color: var(--apple-text-color);
  padding: 12px 16px;
  font-size: 15px;
  text-decoration: none;
  transition: var(--apple-transition);
  text-align: center;
}

.dropdown-item:hover {
  background-color: rgba(0, 0, 0, 0.05);
  color: #000;
}

.dropdown-item i {
  margin-right: 5px;
  opacity: 0.8;
  font-size: 16px;
  color: var(--apple-accent-color);
}

/* --------------------
   4. 按钮样式
   -------------------- */
.btn-primary,
.btn-secondary {
  background: transparent;
  border: none;
  color: var(--apple-text-color);
  font-size: 14px;
  font-weight: 500;
  padding: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  opacity: 0.9;
  transition: var(--apple-transition);
  border-radius: 5px;
}

.btn-primary:hover,
.btn-secondary:hover {
  opacity: 1;
  color: var(--apple-accent-color);
}

.btn-primary i,
.btn-secondary i {
  font-size: 28px;
  margin-right: 0;
}

.btn-login {
  background-color: var(--apple-accent-color);
  border: none;
  border-radius: 5px;
  color: #fff;
  cursor: pointer;
  display: block;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.17648;
  width: 50px;
  padding: 10px 0;
  text-align: center;
  margin: 15px auto 0;
  transition: var(--apple-transition);
}

.btn-login:hover {
  background-color: var(--apple-hover-accent);
  transform: scale(1.02);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.15);
}

/* 发布作品按钮样式 */
.btn-publish {
  background-color: var(--apple-accent-color);
  border: none;
  border-radius: 5px;
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 500;
  padding: 10px;
  transition: var(--apple-transition);
}

.btn-publish:hover {
  background-color: var(--apple-hover-accent);
  transform: scale(1.02);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.15);
}

.btn-publish i {
  font-size: 18px;
  margin-right: 0;
}

/* --------------------
   5. 登录菜单特殊样式
   -------------------- */
.login-menu {
  padding: 18px;
  width: 240px;
  min-width: 240px;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
}

.dropdown:hover .login-menu {
  transform: translateX(-50%) translateY(0);
}

.login-menu-header {
  color: var(--apple-text-color);
  font-size: 15px;
  font-weight: 500;
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--apple-border-color);
}

.login-menu-item {
  color: var(--apple-text-color);
  font-size: 14px;
  padding: 10px 0;
  display: flex;
  align-items: center;
  transition: var(--apple-transition);
}

.login-menu-item:hover {
  color: #000;
}

.login-menu-item i {
  margin-right: 12px;
  opacity: 0.8;
  font-size: 16px;
}

/* --------------------
   6. 二级菜单系统
   -------------------- */
.submenu-container {
  position: absolute;
  left: 0;
  right: 0;
  top: var(--nav-height);
  background-color: var(--apple-bg-color);
  backdrop-filter: var(--apple-blur-effect);
  -webkit-backdrop-filter: var(--apple-blur-effect);
  display: none;
  padding: 40px 0;
  z-index: 999;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
  border-bottom: 1px solid var(--apple-border-color);
  /* 移除可能导致鼠标事件冲突的效果 */
  transition: all 0.3s ease;
}

.submenu-container.submenu-active {
  display: block; /* 直接显示，不使用透明度过渡 */
}

.submenu-container::before {
  content: '';
  position: absolute;
  top: -5px;
  left: 0;
  right: 0;
  height: 5px;
  background: transparent;
}

/* 二级菜单显示逻辑通过JS控制，不使用CSS相邻选择器 */
.submenu-container:hover {
  display: block;
}

.submenu-grid {
  display: flex;
  flex-wrap: nowrap;
  justify-content: center;
  gap: 30px;
  max-width: 1350px;
  margin: 0 auto;
  overflow-x: auto;
  padding: 0 20px;
}

.submenu-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  width: 170px;
  text-decoration: none;
  transition: var(--apple-transition);
}

.submenu-item:hover {
  transform: scale(1.05);
}

.submenu-icon {
  width: 60px;
  height: 60px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  transition: var(--apple-transition);
}

.submenu-item:hover .submenu-icon {
  background-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}

.submenu-icon i {
  font-size: 24px;
  color: var(--apple-text-color);
}

.submenu-title {
  color: var(--apple-text-color);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 5px;
  transition: var(--apple-transition);
}

.submenu-item:hover .submenu-title {
  color: var(--apple-accent-color);
}

.submenu-desc {
  color: var(--apple-text-secondary);
  font-size: 12px;
  line-height: 1.4;
}

/* --------------------
   7. 移动端侧边菜单
   -------------------- */
/* 汉堡菜单按钮 */
.hamburger {
  display: none !important;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  width: 20px;
  height: 20px;
  position: relative;
}

.hamburger span {
  display: block;
  width: 18px;
  height: 1px;
  margin: 4px 0;
  background-color: var(--apple-text-color);
  transition: var(--apple-transition);
}

/* 汉堡菜单激活状态 */
.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(4px, -4px);
}

/* 侧边菜单样式 */
.side-menu {
  position: fixed;
  top: 0;
  right: -300px;
  width: 300px;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.95);
  backdrop-filter: var(--apple-blur-effect);
  -webkit-backdrop-filter: var(--apple-blur-effect);
  z-index: 10000;
  transition: right 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
  overflow-y: auto;
  visibility: hidden;
}

.side-menu.active {
  right: 0;
  visibility: visible;
}

.side-menu-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
  border-bottom: 1px solid var(--apple-border-color);
}

.side-menu-title {
  color: var(--apple-text-color);
  font-size: 16px;
  font-weight: 500;
}

.side-menu-close {
  background: none;
  border: none;
  color: var(--apple-text-color);
  font-size: 24px;
  cursor: pointer;
  padding: 0;
  transition: var(--apple-transition);
}

.side-menu-close:hover {
  color: #fff;
  transform: scale(1.1);
}

.side-menu-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.side-menu-item {
  color: var(--apple-text-color);
  font-size: 17px;
  font-weight: 400;
  padding: 12px 20px;
  border-bottom: 1px solid var(--apple-border-color);
  display: block;
  text-decoration: none;
  transition: var(--apple-transition);
}

.side-menu-item:hover {
  background-color: rgba(255, 255, 255, 0.05);
  color: #fff;
}

.side-menu-mask {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 9999;
  display: none;
  opacity: 0;
  transition: opacity 0.3s ease;
  visibility: hidden;
}

.side-menu-mask.active {
  display: block;
  opacity: 1;
  visibility: visible;
}

/* --------------------
   8. 动画和响应式设计
   -------------------- */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 移动端样式 */
@media (max-width: 900px) {
  .nav-menu {
    display: none;
  }
  
  .hamburger {
    display: flex !important;
  }
  
  .nav-flex {
    padding: 0 16px;
  }
}

/* 确保汉堡菜单和侧边菜单在默认情况下完全隐藏 */
@media screen and (min-width: 901px) {
  .hamburger,
  .side-menu,
  .side-menu-mask {
    display: none !important;
    visibility: hidden !important;
    opacity: 0 !important;
  }
}

/* --------------------
   8. 搜索弹窗样式
   -------------------- */
.search-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(255, 255, 255, 0.7);
  backdrop-filter: var(--apple-blur-effect);
  -webkit-backdrop-filter: var(--apple-blur-effect);
  z-index: 10000;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--apple-transition);
}

.search-overlay.active {
  opacity: 1;
  visibility: visible;
}

.search-container {
  width: 100%;
  max-width: 680px;
  margin-top: 80px;
  background-color: var(--apple-menu-bg);
  border-radius: 18px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.15);
  overflow: hidden;
  transform: translateY(-30px);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid var(--apple-border-color);
}

.search-overlay.active .search-container {
  transform: translateY(0);
}

.search-header {
  display: flex;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--apple-border-color);
}

.search-input-wrapper {
  display: flex;
  align-items: center;
  flex: 1;
  background-color: rgba(0, 0, 0, 0.05);
  border-radius: 8px;
  padding: 10px 14px;
  margin-right: 16px;
}

.search-icon-input {
  color: var(--apple-text-secondary);
  margin-right: 8px;
  font-size: 16px;
}

#search-input {
  background: transparent;
  border: none;
  color: #000;
  font-size: 16px;
  width: 100%;
  outline: none;
  font-family: var(--apple-font);
}

#search-input::placeholder {
  color: var(--apple-text-secondary);
  opacity: 0.7;
}

.search-clear {
  background: transparent;
  border: none;
  color: var(--apple-text-secondary);
  cursor: pointer;
  padding: 0;
  font-size: 14px;
  opacity: 0.7;
  transition: var(--apple-transition);
  display: none;
}

.search-clear.visible {
  display: block;
}

.search-clear:hover {
  opacity: 1;
  color: #fff;
}

.search-close {
  background: transparent;
  border: none;
  color: var(--apple-text-color);
  font-size: 24px;
  cursor: pointer;
  padding: 0;
  line-height: 1;
  transition: var(--apple-transition);
}

.search-close:hover {
  color: #fff;
}

.search-results {
  max-height: 60vh;
  overflow-y: auto;
  padding: 10px 0;
}

.search-results::-webkit-scrollbar {
  width: 8px;
}

.search-results::-webkit-scrollbar-track {
  background: transparent;
}

.search-results::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
}

.search-results::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}

.search-results-message {
  padding: 20px;
  text-align: center;
  color: var(--apple-text-secondary);
  font-size: 14px;
}

.search-result-item {
  display: flex;
  align-items: center;
  padding: 14px 20px;
  border-bottom: 1px solid var(--apple-border-color);
  transition: var(--apple-transition);
  text-decoration: none;
}

.search-result-item:hover {
  background-color: rgba(0, 0, 0, 0.05);
}

.search-result-icon {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background-color: rgba(0, 0, 0, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 16px;
  flex-shrink: 0;
}

.search-result-icon i {
  font-size: 20px;
  color: var(--apple-accent-color);
}

.search-result-content {
  flex: 1;
}

.search-result-title {
  color: #000;
  font-size: 16px;
  margin-bottom: 4px;
  font-weight: 500;
}

.search-result-desc {
  color: var(--apple-text-secondary);
  font-size: 14px;
}

.search-no-results {
  padding: 30px 20px;
  text-align: center;
  color: var(--apple-text-secondary);
}

.search-highlight {
  color: var(--apple-accent-color);
  font-weight: 500;
}

@media (max-width: 768px) {
  .search-container {
    margin: 60px 16px 0;
  }
  
  .search-header {
    padding: 12px 16px;
  }
}

/* 去掉首页按钮的背景 */
.nav-item.home {
  background: none;
  border: none;
  box-shadow: none;
} /* 修复下拉菜单显示问题 */
.dropdown:hover .dropdown-menu {
  display: block !important;
  opacity: 1 !important;
  visibility: visible !important;
  transform: translateX(-50%) translateY(0) !important;
  pointer-events: auto !important;
}
/* 修复下拉菜单显示问题 */
.dropdown:hover .dropdown-menu {
  display: block !important;
  opacity: 1 !important;
  visibility: visible !important;
  transform: translateX(-50%) translateY(0) !important;
  pointer-events: auto !important;
}
/* N�b܃US�O
Y7h_ */
.dropdown-menu {
  display: none;
}

.dropdown:hover .dropdown-menu {
  opacity: 1 !important;
  visibility: visible !important;
  transform: translateX(-50%) translateY(0) !important;
  pointer-events: auto !important;
  display: block !important;
}